CANNON Instrument Company | Introduction
Figure 3: Front of Load Frame
Manual Operation
The Load Frame can be operated both manually (LOCAL) and automatically (REMOTE) as shown in
Figure 4.
Figure 4: Front of Control Unit with Local and Remote Mode
The normal test procedure involves elements of both. Manual operation is used to adjust the
position of the loading shaft to bring it into contact with the asphalt beam and adjust the load to be
applied to the beam.
Automatic Operation
Automatic operation is controlled via the computer. The computer sends signals to the electronics
system to trigger a solenoid valve which regulates the flow of pressurized air (or gas). This adjusts
the net load applied to the asphalt beam. Refer to Figure 4.
Air/Water Heat Exchanger
The Air/Water Heat Exchanger consists of a radiator, fan(s), and a water pump to circulate and cool
a mixture of water and ethylene glycol flowing through the hot side heat sinks surrounding the bath
in the Control Unit. Circulation of the mixture removes heat from the Control Unit bath.
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